Toy building element



FIG. 1 is a top perspective view of toy building element with a pin showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a side elevational view thereof; and

FIG. 5 is a bottom view thereof. 

The ornamental design for a toy building element, as shown and described. 